Some fearless foolhardy researchers at the Institute of Robotics and Mechatronics at the German Aerospace Center (DLR) have armed a robot with various stabbing and slicing instruments, and have attempted to program it to restrain itself from injuring people.

The video is a fascinating series where the robot is given various cutting instruments: scissors, kitchen knives, a screwdriver and a scalpel. They proceed to have it stab and slice different materials including a piece of silicone and a pig's leg. The coup de grâce is at the end when they have a volunteer hold his arm out for the knife wielding menace.